Distributing device for steam or air engines.



Patented Dec. 23, i902.

G. A. BRUNNER. DISTBIBUTING DEVISE FDR STEAM (1R AIR ENGINES.

(Applicatiol led July 13, 1901.)

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Na. 7|6,664. Patented' Dec. 23, 1902.

C. A. BRUNNER.

DISTBIBUTING DEViCE FR STEAM 0R AIR ENGINES.

(A pplxfcagon led July 18, 1901.) l (No Model.) 2 Sheets-Sheet 2.

UNrTaD STATES PATENT Gruen.

CHARLES ALBERT BRUNNER, OF LEVALLOIS PERRET, FRANCE.

DlSTRlBUTlNG DEVICE FOR STEAM-R AlR ENGlNES.

SPECIFICATION forming' part of Letters Patent No. 716,664, dated December 23, 1902.

. Application filed July 13,1901. Serial No. 68,272. (Nomodel.)

To a/ZZ whom, it may con/cern:

Beit known that I, CHARLES ALBERT BRUN- NER, builder, residing in Levallois Perret, Seine, France, have invented certain new and useful Improvements in Pumping-Engines,

of which the following is a full, clear, and

exact description and for which I have applied for Letters Patent in France, dated Decemloer '15, 1900, No. 306,295.

Thisinvention consists of an improved construction of valve mechanismV for steam or compressed-air engines having reciprocating pistons, especially for the actuation of pumps by direct connection.

The accompanying drawings illustrate a steam-engine fitted with the invention and driving a lubricating-pump. l

Figure l is a view of the whole in elevation. Fig. 2 is an elevation of the same viewed at right angle, but showing only the steamcylinder driving the pump. Fig. 3 is a hori- Zontal section on line A B of Fig. 1. Fig. 4 is a corresponding plan view of Fig. 2. Fig. 5 is a view of the whole in vertical section on line C D of Fig. 3. Fig. 6 is a vertical section of a double-pump arrangement. Y

The steam-engine comprises a cylinder 1, in which works a piston 2, of which the piston-rod 3, suitably guided, as usual, in a stuffing-box 4, is extended and connected to the piston or plunger of the pump, as will be presently described. The supply of steam to this cylinder is effect-ed bythe following mechanism: At the ends of the piston-stroke are two ports 5 5, which deliver irst on to the internalsurface of a truncated conical chamber 6, arranged within a lump upon the cylinder. Into this truncatedconical chamber 6 there is inserted and fits with slight friction, as in a valve-seat, a truncated plug 7 xed axially upon a shaft 8, suitably supported and journaled in a stuffing-box 9. In plug? are formed the following different passages: Two ports 10 10 lead from a common opening 11 upon the small base of the cone and to the truncated wall at two kpoints 12 12. Two otherports 13 13, independent one of the other, deliver at 14 14 to the larger base of the cone and also at 15 15 to the conical surface. The construction is clearly shown in Figs. 3 and 5. In the aforesaid pump,in which the said chamber or seat is formed, is also provided a passage 16, which delivers against the small base of the cone opposite to the opening 1l. The escape of steam takes place through this passage 16. The steam is admitted through an inlet 17, opening into the seat 6 below the larger base of the truncated.

cone-plug 7. The shaft 8 of the plug or valve 7 is provided at its .extremity with a head in the form ofa sector or cam 18, secured thereto. Upon this end of the shaft S isv loosely journaled a frame of special construction. This frame consists of two arcs of a circle 19 19, of which the cords are parallel and which are connected by two rectilinear portions 20 20. To one of the arcs is joined a part 20a, journaled upon shaft 8. To this part 2Oa is secured an arm 21, projecting upwardly and upon which is fixed an adjustable weight 22. The rod 3 of the piston 2 is connected, by means of a cross-piece 23, to a rod 24, which is parallel thereto and which is thus rendered integral therewith. This rod 24 is guided at 25 in the supporting-beam of the pump and at 26 and 27 in the upper and lower plates of the cylinder 1. part with a projection or stop 28, which passes through thehollow of the frame 19 19 2O 20.

The oil-pump is arranged above the steamcylinder and axially'thereof. The body 0f the pump 29 is fixed to a plate 30, connected to the steam-cylinder by three pillars 3l 31 31. The plunger-piston 32 is arranged upon the upper .end of the rod 3 of the piston 2 of the steam-cylinder. It is guided in a stuifing-boX 33. The entranceof/ oil is elected through apipe 34 and valve 35, and the exit is made through aforos-valve 36 and pipe 37.

The workin g of this apparatus is as follows: The distributing mechanism effects the admission and exhaust by the partial and alternating rotation ofthe rotary valve 7 These movements of alternating rotation are eected by the rectilinear movement of the projection 2S in the frame 2.0 21, and-this projection 28 is secured to the rod 24, which is itselfsolid With the rod 3 of the piston.

This projection 28 thus effects a rectilinear reciprocating movement within the aforesaid frame 2O 2O 2l 21. This movement determines the oscillation of this frame. The latter at its portion 20a. acts alternately on the two ends of the cam 1S, integral with the shaft 8 and It is provided at its lower the circular valve. To this is thus imparted a partial rotation rapidly alternating in opposite directions, by means of which at each of its eXtreme positions a port 10 coincides 5 with one of the ports 5, so as to eect the eX- haust, while a port 13 coincides with the other port 5 in order to effect the admission of steam.

The proper lit or joint of the rotary valve Io with the wall of the hollow wherein it moves is insured by the same pressure of the steam which acts upon the larger base of the valve. The limits of the stroke of the counterweighted arm 2l, and consequently of the frame I5 and of the valve, are determined by two abutments or stops 21a, formed upon the framework or the outside of the cylinder.

In the case of two superposed pumps the plunger-piston of the lower pump is extend- 2o ed by means of a rod which forms the plunger-piston or" the second pump. Fig. 6 shows such an arrangement in section.

I do not limit myselfv strictly to the details of construction of the apparatus shown on 25 the drawings, and I may make therein various alterations and constructional modifications which do not change the essential arrangements set forth.

Having thus described my invention, what I claim as such, and desire to secure by Let- 3o ters Patent, is-

1. A steam-engine having a cylinder, a reciprocating piston, a valve-chamber, a valve mechanism comprising the combination of a rotary valve, coperating parts between the 35 valve and cylinder and a spindle for the valve,

a sector-head on the spindle, a frame journaled on said spindle, a Weight on the frame, and a projection on the reciprocating piston to act on theframe,substantia1ly as described. 4o

2. A valve mechanism for a steam-engine having a reciprocating piston, said mechanism comprising the combination of a valvechamber, a rotary valve in the form ofa truncated cone and having ports 10, 11, 12, 13, 14, 45 and 15, corresponding passages in the casing,

a spindle on the valve, and a sector-head on the spindle, with a frame journaled on the spindle, and a projection on the reciprocating piston to act on said frame, substantially as 5o described.

In testimony whereof I have signed my name to this specification in the presenceof two subscribing witnesses.

CHARLES ALBERT BRUN NER.

Witnesses:

GUs'rAvE DUMONT, EDWARD P. MACLEAN. 

